-30% is the change from 930 to 651
Calculation steps:
[( 651 - 930 ) ÷ 930] x 100 = -30%
Formula
Percentage change = [(651 - 930) / 930] x 100
Subtract the new number by the original number
651 - 930 = -279
-279 ÷ 930 = -0.3
-0.3 x 100 = -30%
Example